发明名称 |
Record material carrying a color developer composition |
摘要 |
A color developer for use in a pressure- or heat-sensitive record material comprises a particulate amorphous hydrated silica/hydrated alumina composite in which the hydrated silica and hydrated alumina are chemically bound and in which the mean alumina content on a dried weight basis is up to 7.5%, based on the total weight of silica and alumina. The composite may be metal-modified, e.g. with copper.
|
申请公布号 |
US4387117(A) |
申请公布日期 |
1983.06.07 |
申请号 |
US19810272733 |
申请日期 |
1981.06.11 |
申请人 |
THE WIGGINS TEAPE GROUP LIMITED |
发明人 |
SHANTON, KENNETH J. |
分类号 |
B41M5/155;B41M5/333;(IPC1-7):B41M5/16;B41M5/18;B41M5/22 |
主分类号 |
B41M5/155 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|